Preheat oven to 450° F. Note: If you have a pizza stone, put it in the oven while the oven reheats for more even cooking and a browner, crisper crust.
Combine the shredded chicken, buffalo sauce, and 1 tablespoon of blue cheese. Let the chicken marinate while you prepare the remaining ingredients.
Spread the dough onto a lightly greased, 12-inch pizza pan (or stone). Poke holes in it with a fork to prevent the crust from bubbling up in the oven.
Top with pizza sauce, then with most of the mozzarella. Add the chicken, onions, and banana peppers, then the remaining mozzarella.
Drizzle with 3 tablespoons of blue cheese, along with 1-2 tablespoons of buffalo sauce.
Bake for 13 minutes and remove from the oven.
Combine the melted butter, Parmesan cheese, and garlic powder. Brush it over the crust of the pizza and return it to the oven.
Bake for 2-3 more minutes, or until the crust begins to brown.
Garnish with green onions, red pepper flakes, and parsley. Slice and serve!